campbell's soups give you nutrition, energy, and can help you keep a healthy weight. campbell's. it's amazing what soup can do. >>> it was a wild ride to election day 2012. jim acosta has the top ten campaign stories of the year. >> reporter: the year started off with a surprise in a sweater vest, counting down the top campaign stories of the year, number ten, the primaries. rick santorum's stunning performance in the iowa caucuses. >> game on. >> reporter: kicked off a battle for the republican nomination that few in washington had expected. the gop's odds on favorite, mitt romney stumbled in some of the early contests. he refused to release his tax returns allowing newt gingrich to take south carolina. >> we proved here in south carolina that people of power beats big money. >> reporter: but that big money eventually cleared the field and romney set his sights on the president. >> it's still about the economy and we're not stupid. >> reporter: at number nine, bain. not that one. that one. almost as soon as romney had had locked up the nomination, his former private investment c